initial feature/react-migration commit

dashboard-dash-backup/callbacks/auth_callbacks.py

@@ -0,0 +1,31 @@
+# dashboard/callbacks/auth_callbacks.py
+import dash
+from dash import Input, Output, State, dcc
+from flask import session
+from utils.auth import check_password, get_user_role
+from config import ENV
+from utils.db import execute_query
+
+@dash.callback(
+    Output("login-feedback", "children"),
+    Output("header-right", "children"),
+    Input("btn-login", "n_clicks"),
+    State("input-user", "value"),
+    State("input-pass", "value"),
+    prevent_initial_call=True
+)
+def login_user(n_clicks, username, password):
+    if ENV == "development":
+        # Dev‐Bypass: setze immer Admin‐Session und leite weiter
+        session["username"] = "dev_admin"
+        session["role"] = "admin"
+        return dcc.Location(href="/overview", id="redirect-dev"), None
+
+    # Produktions‐Login: User in DB suchen
+    user = execute_query("SELECT username, pwd_hash, role FROM users WHERE username=%s", (username,), fetch_one=True)
+    if user and check_password(password, user["pwd_hash"]):
+        session["username"] = user["username"]
+        session["role"] = user["role"]
+        return dcc.Location(href="/overview", id="redirect-ok"), None
+    else:
+        return "Ungültige Zugangsdaten.", None